Metal sash.



D. STOCK.

METAL SASH.

APPLICATION FILED SEPT. 22, 1913.

1, 1 301,,58Q Patented June 30, 1914,

OFFTQE.

DAVID STOCK, OF TORONTO, ONTARIO, CANADA.

METAL SASH.

To all whom it may concern Be it known that 1, DAVID STOCK, of the city of Toronto, in the county of York and Province of Ontario, Canada, have invented certain new and useful Improvements in Metal Sash; and I hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to improvements in metal sash, in which the sash bars are oined so that they cannot move from their fixed position with relation to each other, as here inafter set forth and illustrated in the accompanying drawings in which Figure l is a perspective view of one of the sash joints. Fig. 2 is a vertical section through the same on the line a-a Fig. 1, and Figs. 3 and 4 are perspective views showing the formation of the sash bars at the place of jointing.

Formed transversely through the head 0, of the sash bar a, at its junction with its flange cl, is a slot 6, and formed in the edge of the flange d, in line with the middle of the slot 6, is a nick f.

Formed in the head g, of the sash bar it, is a dove tail groove 71, extending nearly to the bottom of the head 9, and formed through the flange j is a slot is, in line with the middle of the dove tail groove 2', said slot 70 extending to the junction of the flange 7', with the head 9. Formed through the head 9, at the middle of the bottom 9 of the dove tail groove 2', is a narrow slot 9. The slot 7c, is of greater width than the slot 9, to form a tongue 9 at each side of the slot 9, and is of substantially the same width as the thickness of the flange d to receive it when the sash bars are assembled.

To assemble the parts of the sash joints the sash bar it, is bent to spread asunder the sides of the dove tail groove 2', slot 9, and slot 70 for the entry of the head 0 and flange d of the sash bar a therein, the sash bar it then being bent to close the said sides together again whereby they will tightly embrace their corresponding parts of the sash bar a; the nick f, in the sash bar a, then containing the lower part of the flange j, of the sash bar it. WVhen the sash bar IL has been bent back to its normal position the tongues g are entered within the slot 6, and engage Specification of Letters Patent.

Application filed September 22, 1913.

Patented June 30, 1914.

Serial No. 791,042.

its sides to prevent lateral movement of the sash bar it, and the lengthwise movement of the sash bar a, the engagement of the tongues in the said slot being the essential feature of my invention. As shown in the drawings the slot 9 is opposed to the middle of the slot 70, for the purpose of forming two tongues g at the bottom of the head, but it is possible to cut the slot 9" at one side of the slot 7c, and thus form a single tongue. This construction however will require a greater degree of bending to form a suflicient clearance for flange cl to pass into the slot is during the assembly of the sash bars, than if the slot 9 is located opposite the middle of the slot 70. With the exception of this disadvantage, a single tongue will effect as secure a lock as the two tongues above described.

Having thus fully described my invention what I claim as new, and desire to secure by Letters Patent, is

1. A metal sash comprising two sash bars each consisting of a head and flange, one of said sash bars having its head formed with a dove tail groove and its flange formed with a slot in line with the dove tail groove, and communicating therewith, said slot and dove tail groove forming a tongue at the bottom of the said head, the other of said sash bars having its flange contained in said slot, and its head transversely slotted and contained in said dove tail groove, said tongue, when the sash bars are assembled, being contained in said slotted head.

2. A metal sash comprising two sash bars each consisting of a head and flange, one of said sash bars having its head formed with a dove tail groove and its flange formed with a slot in line with the dove tail groove, and communicating therewith, said slot and dove tail groove forming two lengthwise tongues at the bottom of the said head, the other of said sash bars having its flange contained in said slot, and its head transversely slotted and contained in said dove tail groove, said tongues, when the sash bars are assembled being contained in said slotted head.

DAVID STOCK.

Witnesses:

C. H. Thomas, FRANK F. BOOTHBY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

